Ice-cream freezer.



J. C. MILLER ICE CREAM FREEZER.

APPLICATION .HLED APR. 30. 1910.

Patented May 30, 1916.

2 SHEETS-SHEET I.

J'. C. MILLER.

ICE CREAM FREEZER. APPLICATION FILED APR. 30. 1910.

1 1 85, l 2 l Patented May 30, 1916.

2 SHEETS-SHEET 2.

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Zara] arm/WAX ing.

JOHN C. MILLER, 0F CINCINNATI, OHIO.

ICE-CREAM FREEZER.

Specification of Letters Eatent,

Patented May 30, 1916..

Application filed April 30, 1910. Serial No. 558,709.

To all whom it may ccncern:

Be it known that 1, JOHN C. MILLER, a citizen of the United States, and a resident ofthe city of Cincinnati, in the county of Hamilton and State of Ohio, certain new and useful Improvements in Ice-Cream Freezers, of which the following is a clear, full, and exact description, reference being had to the accompanying drawings, forming a part of this specification.

The object of my invention is to provide a construction of ice cream freezer which shall congeal andbeat up the ice cream mixture to the extent required practically instantaneously, so that a continuous flow of material can be supplied to the machine, to be withdrawn continuously from the outlet in proper condition for packing and solidify- To accomplish this purpose, I have provided a novel construction of to be hereinafter particularly pointed out and claimed in which the fluid mass to be congealed is instantly spread out as it is delivered to the machine, into a very thin sheet in contact with a metal casing to which is applied the temperature lowering medium, so that only a momentary contact of fluid with the inner surface of the casing is required to reduce the temperature the required amount.

In the drawings, Figure 1 is a side elevation of my improved machine, partly in vertical section. Fig. 2 is a front elevation of the same. Fig. 3 is a detail vertical section of the intake end of the machine. Fig. 4 is a perspective view of the scraper. Fig. 5 is a detail vertical section of the delivery end of the machine. Fig. 6 is a cross section on the line 6, 6, of Fig. 1 of the cylinder and easing removed from the supports.

1 is a metal cylinder of any desired diameter and length, provided, with and supported at the ends by radial arms 2, 2, and 3, 3. These arms are secured at 'the center to hollow shafts 4, 5, respectively, which shafts are journaled in suitable bearings in standards 6, 7. The outer end of one 0 these shafts, as 5, is provided with a driving pulley 8, by means of which the hollow shaft and cylinder can be rotated at a very high rate of speed. The ends of the cylinder 1 are provided with inwardly projecting annular flanges 9, 10, and these flanges overhave invented apparatus lap diskplates 11 and 12 at each end respectively, so as to close up the cylinder 1 at each. end. The disk plates 11 and 12 are secured in fixed position on the framework by supports 43, 44, respectively and areprovided with flanges 13, 14, loosely mounted on the hollow shafts 4, 5, respectively, and pro- -.vided with stufling boxes.

The flange 9 of the cylinder 1 overlaps the disk plate 11 at the front end of the machine on the outside, and the flange 10 at the rear end of the machine overlaps the disk 12 on the inside. The fixed disk plate 11 is provided with an intake spent 15 extending vertically upward, and the disk plate 12 is provided with a depending delivery spout 16.

The cylinder 1 is provided with an external outer casing 17 closed at the ends, so as to form a jacket or compartment 30 completely surrounding the cylinder 1.

Mounted in fixed position in the frame and passing through the hollow shafts 4, 5, and longitudinally through the middle of the cylinder 1, is a shaft or rod 18, and on the inside of the cylinder and fixed to the fixed shaft or rod 18 is a scraper plate. This plate is cut away for the middle portion, leaving radial arms 19, 19, and on the ends of the arms on one side is secured or formed integral therewith the longitudinal plate 20. On the opposite end of these arms, and extending lengthwise of the cylinder is the scraper plate 21 which carries on one of its side faces a series of blades 22, preferably made of very thin metal and mounted diagonally on the scraper plate 21. The .outer edges 23 of these blades 22 are segmental in shape to conform to the surfaces of the cylinder 1, and these inclined blades are set on the plate 21 so as to bring the edges of the blades almost in contact with the cylinder 1. The space between the edges of the blades and the cylinder is such as to allow the cylinder to rotate without being scratched by the blades.

The compartment or jacket inclosing the main cylinder 1 is continuously supplied with the temperature lowering medium,

-usually brine, through an inlet pipe 24,

which is connected with a passageway 25 formed in the hollow shaft 4, which passageway opens at 26 into the box 27 fixed this high rate :of

trough 42 formed on the in the frame and loosely mounted; on the hollow shaft 4, the box being provided with stuffing boxes 28 to prevent leakage of the li uid.

The cooling medium is drawn or forced continuously into the box 27 through the pipe 29, and thence is carried through the passageway and pipe 24 into the chamber 30 surrounding the main cylinder 1.

At the opposite end of the compartment 30, the cooling medium. is drawn off through the pipe 32 which is connected with the passageway 33 in the hollow shaft 5, which passageway 33 opens at 34 into the box 35 fixed in the framework and loosely mounted on the shaft 5 and provided with the stufling' boxes 36, 37 is the delivery pipe through this box 35 to the cooling liquid supply. In this Way we have a continuous flow of cooling medium over the external surface of the metal cylinder. The movement of the cooling mediumis enforced by apump (not shown).

Mounted on suitable supports 38 on-the framework is the receptacle 39 provided with faucet 40, the mouth of which faucet is directly over the intake spout 15, and by opening the valve, 41 the contents of the receptacle 39 are discharged into the intake funnel 16 and thence into the end of the cylinder through the end plate 11. The material goes through the spout and drops onto the annular end flange 9 of the cylinder 1, this cylinder 1 being rotated at a very high rate of speed, and the material, by reason of out over the inner surfaces of the cylinder in a very thin layer.

As the ice cream mixture is poured into the machine, a circulation of very cold brine or other cooling medium is enforced through the outer compartment, so that the temperature'of the metal cylinder 1 is lowered to the freezing point or below, and the thin film of ice cream mixture which bythe centrif-ugal movement of the cylinder is spread over the inner surface thereof, is at once reduced in temperature to the proper and desired point.

The blades 22, as the cylinder rotates, becarry the congealing' ing set at an angle, mixture toward the rear of the machine, where the material is caught in the annular isk plate 12 at the edge. of the overlapping portion thereof,

and this material is delivered through the outlet spout 16 in perfectly congealed condition for packing and solidifying.

As already stated, the cylinder 1, and its accessories, are rotated at a very high rate of speed while the scraper plate is stationary, and the cream mixture is thoroughly beaten up by contact with the plates and arms of the scraper and at the same time rapidly carrled forward to-the delivery end partment, mechanism for the rotation thereof, and

speed, is instantly spread culation of a cooling medium of the machine by contact With.the angularly disposed blades.

ment for the cooling. medium, means for providing a continuous circulation of a liquid cooling medium over the external surface of the cylinder through said comrotating the cylinder at a high rate of speed, and'means for delivering the material to be treated upon the internal surface of the cylinder during means for collecting the material from said cylinder during its rotation.

' 2. In an ice cream freezer, the combination of a metal cylinder, with an external casing carried thereby to form a compartment for the cooling medium, means for providing a continuous circulation. of a liquid cooling medium-over the external surface of the .cylinder through said compartment, mechanism for rotating the cylinder at a high rate of'speed, and means for delivering the material to be treated upon the internal surface of the cylinder during its rotation, a fixed scraper to scrape the in ternal surface of the cylinder during its rotation, and means for collecting the material from said cylinder during its rotation.

3. In an ice cream freezer, ametal cylinder, means for providing a, continuous cirover the external surface tating the cylinder at a high rate of speed, and means for" delivering the material to be treated upon the internal surface of the cylinder during the rotation thereof, a fixed scraper to scrape the internal surface of the cylinder during its rotation, with blades, set at an angle to the cylinder surface to feed forward the material to the delivery end of the cylinder and means for collecting the material from said cylinder during its rotatlon.

4. In anice cream freezer, a metal cylinder provided with an external casing to form a compartment for the cooling medium, mechanism for rotating the cylinder and easing at'a high rate of speed, means for enforcing a continuous circulation of cooling medium through partment during the rotation, means for delivering the material to be treated upon the internal surface of the cylinder during the rotation and means for collecting the material from the cylinder during the rotation thereof.

In an ice cream freezer, a metal cylinder provided with an external casing to forma compartment for the cooling methe external com-- thereof, mechanism for rothe rotation thereof.

' cylinder during partment during the rotation, means for delivering the material to be treated upon the internal surface of the cylinder during the rotation, a fixed scraper to scrape the internal surface of the cylinder, and meansfor collecting the materialfrom the cylinder during the rotation thereof.

6. In an ice cream freezer, a metal cylinder provided with an external casing to.

form a compartment for the cooling medium, mechanism for rotating the cylinder and casing at a high rate of' speed,-means for enforcing a continuous circulation of cooling medium through the external compartment during the rotation, means fordelivering the material to be treated upon the internal surface of the cylinder during the rotation, a fixed scraper to scrape the internal surface of the cylinder with blades set at an a gle to the cylindrical surface to feed forward the material to the delivery end of the cylinder, and means for collecting the material from the cylinder during 7. In an ice cream freezer, a rotatable metal cylinder, with shaft-s for the ends of the cylinder upon which thecylinder is mounted, an external casing for the cylinder to form a compartment for the cooling medium, with passageways in the shafts and connecting pipes for the cooling compartment to provide means for circulating a cooling medium therethrough, means for rotating said cylinder at a high rate of speed, means for delivering the material to be treated upon the internal surface of the the rotation and means for collecting the material from the cylinder during the rotation thereof.

8. In an ice cream freezer, a rotatable metal cylinder, with shafts for the ends of the cylinder upon which the cylinder is mounted, an external casing for the cylinder to form a compartment for the cooling medium, with passageways i the shafts and connecting pipes for the cooling compart ment to provide means .for circulating a therethrough, means for ro-- cooling medium tating said cylinder at a high rate of speed, means for delivering the material to be treated upon the internal surface of the cylinder during the rotation, a fixed scraper to scrape the internal surface of the cylinder, and means for collecting the material from the cylinder during the rotation thereof.

9. In an ice cream freezer, a metal cylinder with means for applying a cooling medium to the external surface thereof, fixed plates to inclose the cylinder at each end,

with a passage through each of said fixed inder with means for I mounted, an external plates for the supply and removal of the material treated and means for rotating said cylinder at a high rate of speed.

10. In an ice cream freezer, a metal cylinder with means for applying acooling medium to the external surface thereof, said cylinder provided with inwardly projecting end flanges, fixed plates to inclose the flanged cylinder at each end, with a passage through each of saidfixed plates for the supply and removal of the material treated and means for rotating said cylinder at a high rate of speed.

11. In an ice cream freezer, a metal cylapplying a cooling medium to the external surface thereof, said cylinder provided with inwardly projecting end flanges, fixed plates to inclose the flanged cylinder at each end, with a passage through each ofcsaid fixed plates for the supply and removal of the material treated, the flange of the cylinder at the supply end overlapping the fixed plate and at the delivery end underlapping the fixed plate and means for rotating said cylinder at a high rate of speed.

12. In an ice cream freezer, a rotatable metal cylinder, with shafts for the cylinder upon which the cylinder is casing for the cylinder to form a compartment for the cooling medium, with passageways in the shafts and connecting pipes for the cooling compartment to provide means for cooling medium therethrough, means for rotating said cylinder at a high rate of speed, and fixed plates to inclose the cylinder at each end with a passage said fixed plates for the supply and removal I of the material treated.

13. In an ice cream freezer, a rotatable metal cylinder, with shafts for the ends ofthe cylinder upon which the cylinder is mounted, an external casing-for the cylinder to form a compartment for the cooling medium, with passageways in the shafts and connecting pipes for the cooling compartment to provide means for circulating a cooling medium therethrough, means for rotating said cylinder at a high rate of speed, said cylinder provided with inwardly projecting end flanges, and fixed plates to inclose the flanged cylinder at each end, with a passage through each of said fixed plates for the supply and removal of the material treated. v

14. In an ice cream freezer, a metal cyl inder with means for supplying a cooling medium to the external surface thereof, said cylinder being provided with inwardly projecting' end flanges, fixed plates to inclose the flanged cylinder at each end, with a passage through each of said fixed plates for the supply and removal of the material treated, and means for rotating said cylinder at a through each of the ends of f circulating a are inder, and means for high rate of speed, means for delivering the material to be treated upon the internal surface of the cylinder during the rotation, a fixed scraper to scrape the internal surface of the cylinder, and means for collecting the material from the cylinder during the rotation thereof.

15. In an ice cream freezer, a metal cylinder with means for applying a cooling medium to the external surface thereof, said cylinder provided with inwardly projecting end flanges, fixed plates to inclose the flanged cylinder at each end, with a passage through each of said fixed plates for'the supply and removal of the material treated, and means for rotating said cylinder at a high rate of speed, means for delivering the material to be treated upon the internal surface of the cylinder during the rotation, a fixed scraper to scrape the internal surface of the cylinder with blades set at an angle tothe cylindrical surface to feed forward the material to the delivery end of the cylcollecting the material from the cylinder during the rotation thereof.

16. In an ice cream freezer, a metal cylinder with'means for applying a cooling medium to the external surface thereof, said cylinder provided with inwardly projecting end flanges, fixed plates to inclose the flanged cylinder at each end, with a passage through each of said fixedplates for the supply and removal of the material treated, the flange of the cylinder at the supply end overlap ping the fixed plate and at the delivery end underlapping the fixed plate, rotating said cylinder at a high rate of speed, means for delivering the material to be treated upon the internal surface of the cylinder during the rotation, a fixed scraper to scrape the internal surface of the cylinder, and means for collecting the material from the cylinder during the rotation thereof.

17. In an ice cream freezer, a metal cylinder with means for applying a cooling medium to the external surface thereof, said cylinder provided with inwardly projecting end flanges, fixed plates to inclose the flanged cylinder at each end, with a passage through each of said fixed plates for thesupply and removal of the material treated, the flange of the cylinder at the supply end overlapping the fixed plate and at the delivery end underlapping the fixed plate, and means for rotating the said cylinder at a high rate of speed, means for delivering the material to be treated upon the internal surface of the cylinder during the rotation, a fixed scraper to scrape the internal surface of the cylinder with blades set at an angle to the cylindrical surface. to feed forward the material to the delivery endof the cylinder, and means for collecting the material from 'the cylinder during the rotation thereof.

JOHN C. MILLER.

Attest':

MARsTON ALLEN, K. SMITH.

and means for. 

